New hostname checking function asn1_valid_host()
Check commonName entries against nameConstraints: any CN components in
EE certificate which look like hostnames are checked against
nameConstraints.
Note that RFC5280 et al only require checking subject alt name against
DNS name constraints.
Reviewed-by: Richard Levitte <levitte@openssl.org>
functions. These are intended to be replacements
for the ancient ASN1_STRING_print() and X509_NAME_print()
functions.
The new functions support RFC2253 and various pretty
printing options. It is also possible to display
international characters if the terminal properly handles
UTF8 encoding (Linux seems to tolerate this if the
"unicode_start" script is run).
Still needs to be documented, integrated into other
utilities and extensively tested.
